The transmission identification code will differ depending the type
of transmission - Manual or Powerglide.

The Muncie and Powerglide will have a
production code consisting of a prefix letter designating the
assembly plant, a production date (month/day number) and a shift
code for day or night shift if the transmission assembly plant was
using two shifts.

Manual and Powerglide Transmission Designations

3-speed

4-speed

Powerglide

S - Saginaw

*P - Muncie

C - Cleveland, Ohio
T - Toledo, Ohio

Muncie 4-speed
The four digits of a Muncie 4-speed are the month/day; example P0205 is
February 5.